Lower MPG due to replacing tires?
My wife and I have owned our Toyota Prius for over a year now. We have been averaging about 45-48MPG on a full tank of gas, with our local city driving. However, recently, we've only been getting about 38-42MPG. The only difference I can think of is, that we changed all four tires. We bought some new tires at Costco. The tires are all at the correct pressure. Can different tires really make a 5MPG difference? Thanks.
I don't think by changing the tires will make the 5MPG difference, although I might be asking if you have more items in your Prius, also I just had mine Prius service recently, and I notice the improvement of the fuel efficiency, plus, take your Prius for a long distance, high speed drive is good for it as well.
Yes, the tires make a THAT big of a difference. I did the same thing with my Prius. I did not want to replace the low-rolling resistance tires with the same so I opted for regular sedan tires. My MPGs dropped instantly. On the upside, the car handles much better as is no longer skittish on the freeway.
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